Metrel MI-3123 Earth Resistance Tester

The Metrel MI-3123 Earth Resistance Tester is a next-generation instrument designed for precise and versatile earth resistance measurements. It supports 4-wire earth resistance testing and 4-wire specific earth resistance measurement. When used with optional A 1018 and A 1019 current clamps, it enables:

• 4-wire earth resistance measurement with one clamp
• Contactless earth resistance testing with two clamps
• TRMS current measurement up to 20A

Configurable limits allow for PASS/FAIL evaluation of test results. Test data can be saved and downloaded via optional software for professional report generation. Featuring a lightweight design, large bright LCD screen, built-in help screens, and RS232/USB connectivity, the MI 3123 is an advanced and reliable solution for earth resistance testing.

• Testing on TT and IT systems
• Substation earthing tests
• Lightning protection system testing

• Comprehensive Earth Resistance Testing – Supports standard 4-wire testing and specific earth resistance measurement
• Selective Earth Resistance Testing – Optional 4-wire testing with an additional clamp for measuring individual earthing rods
• Contactless Earth Resistance Testing – Two-clamp method for testing resistance without breaking the loop, ideal for urban environments
• Data Downloading & Reporting – RS232 or USB connectivity (optional software required) for professional test report generation
• Upgradeable Firmware – Ensures compliance with evolving regulations through firmware updates
• On-Site Help Screens – Built-in guidance for ease of use in the field
• Rechargeable Power System – Built-in charger with NiMH rechargeable batteries included
• Custom Test Limits – Configurable PASS/FAIL indication via bright LED indicators
• User-Friendly Design – Large LCD display and ergonomic buttons for easy operation, even with gloves
• Hands-Free Operation – Integrated magnetic holder for secure attachment to metal surfaces

Compatible with various Metrel appliance testers. Contact us for specific compatibility details.

Requires RS232 or USB connection for data transfer (optional software required). Powered by built-in rechargeable NiMH batteries.

• Smartec Earth / Clamp instrument
• Soft hand strap
• Test leads:
  • 4.5m (blue)
  • 4.5m (red)
  • 20m (green)
  • 20m (black)
• Earth test rods (4 pcs)
• Power supply adapter + 6 NiMH rechargeable AA batteries
• Instruction manual (CD)
• Short instruction manual
• Handbook (CD)
• Calibration certificate